我刚刚开始编写一些Jest测试，但立即遇到了“未知插件”错误，否则似乎是可以正常工作的Webpack / Babel设置，并且在npm run dev / {{ 1}}阶段。
具体地说，我得到npm run build
（错误的显示方式与我在Windows上的Git Bash中一样。）
我肯定已经安装了ReferenceError: Unknown plugin "@babel/transform-async-to-generator" specified in "C:\\Users\\scott\\path\\to\\ThisProject\\.babelrc" at 0, attempted to resolve relative to "C:\\Users\\scott\\path\\to\\ThisProject"。
我的@babel/plugin-transform-async-to-generator的相关部分如下：
package.json我的"scripts": {
"test": "jest",
"build": "webpack --mode=production",
"dev": "webpack --mode=development"
},
"jest": {
"transform": {
"^.+\\.jsx?$": "babel-jest"
}
},
"dependencies": {
"@babel/core": "^7.1.2",
"@babel/plugin-transform-arrow-functions": "^7.0.0",
"@babel/plugin-transform-async-to-generator": "^7.1.0",
"@babel/plugin-transform-modules-commonjs": "^7.1.0",
"@babel/plugin-transform-runtime": "^7.1.0",
"@babel/polyfill": "^7.0.0",
"@babel/preset-env": "^7.1.0",
"babel-loader": "^8.0.4",
"clean-webpack-plugin": "^0.1.19",
"copy-webpack-plugin": "^4.5.2",
"webpack": "^4.20.2",
"webpack-cli": "^3.1.2"
},
"devDependencies": {
"ajv": "^6.5.4",
"babel-jest": "^23.6.0",
"eslint": "^5.8.0",
"jest": "^23.6.0",
"jsdom": "^13.0.0",
}
很简单：
.babelrc与{
"presets": [
[
"@babel/preset-env",
{
"targets": {
"ie": "11"
},
"useBuiltIns": "entry"
}
]
],
"plugins": [
"@babel/transform-async-to-generator",
"@babel/transform-arrow-functions",
"@babel/transform-modules-commonjs"
],
"env": {
"development": {},
"test": {},
"production": {}
}
}
相似的jest.config.js类似：
jest --init关于可能出什么问题的任何想法吗？
答案 0 :(得分：2)
尝试运行npm install --save-dev babel-jest babel-core@^7.0.0-bridge @babel/core，我相信babel团队发布了一个桥接软件包，以帮助解决受v7升级影响的依赖项。
有关更多信息，请参见此处：https://github.com/facebook/jest/tree/master/packages/babel-jest#usage